In most of the world, it isn't called "co-sleeping", just "sleeping."
We had an African student stay with us. He has six sisters. I asked him about "co-sleeping" and he thought it was terrible how American children are put by themselves so early. "We all slept in my parent's bed for many years. Everyone back home does that." Same for slings. "Babywearing" probably isn't even a notion in many parts of the world, because that is just what is done. There are no strollers and you need your arms free for work! What is funny about attachment parenting here is that it is "alternative parenting" and in most of the world it is simply "normal."
My DH is a little unsure about it, but he is willing to do whatever is best for baby! He is wonderful